Home / 830,131.61-1,245,197.75-640,868.29

Finding the Fourth Proportional to 830,131.61, 1,245,197.75 and 640,868.29

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Solution

The fourth proportional to 830,131.61, 1,245,197.75 and 640,868.29 is: 961,302.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,131.61 : 1,245,197.75 = 640,868.29 : x
  2. Step 2: Convert to fraction form
    830,131.61/1,245,197.75 = 640,868.29/x
  3. Step 3: Cross multiply
    830,131.61x = 1,245,197.75 × 640,868.29
  4. Step 4: Simplify right side
    830,131.61x = 798,007,746,437.01
  5. Step 5: Solve for x
    x = 798,007,746,437.01/830,131.61
  6. Step 6: Final answer
    x = 961,302.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.